Murray MP340 40A 3P Circuit Breaker | AmpState

The Murray MP340 40A 3P Circuit Breaker from AmpState is a trusted, original-equivalent protection device engineered for panelboards, load centers, and electrical distribution systems. Designed to help you keep your BOM aligned with the original part number, this MP340 is the smart choice for reliable circuit protection in both renovation and new-install projects.

Key features and benefits for the Murray MP340:

• 40 Amp, 3-pole design delivers robust protection for three-phase circuits, helping prevent overloads and electrical faults from cascading through your distribution system.
• Direct-fit replacement preserves BOM integrity by matching the original MP340 footprint and electrical characteristics, reducing the risk of compatibility issues during inventory stocking or project installs.
• Versatile installation for panelboards and load centers ideal for both new builds and maintenance/retrofit scenarios where dependable three-pole protection is required.
• Stock spare efficiency keeping MP340 on hand means faster turnarounds on service calls and downtime minimization for critical facilities.
• AmpState support available to help you confirm fit and compatibility with your specific panel model or BOM requirements—just message us and we’ll assist with the verification.

Why choose the Murray MP340 for your electrical distribution needs

• Maintains original part-number traceability, ensuring replacements align with your existing documentation and maintenance records.
• Provides reliable overcurrent protection for three-phase circuits, helping protect wiring, devices, and downstream equipment.
• Suitable for a range of configurations in commercial or industrial environments where consistent, predictable trip performance matters.

Ideal for electricians, facilities managers, and procurement teams seeking a dependable, readily compatible circuit breaker that supports BOM accuracy and streamlined maintenance. If you’re unsure about fit, take advantage of AmpState’s compatibility assistance to confirm the MP340 matches your panelboard or distribution setup. Add the Murray MP340 40A 3P Circuit Breaker to your cart and keep critical electrical systems protected with a trusted, original-part replacement.